CN212845583U - Intelligent high-voltage cable grounding monitoring system - Google Patents
Intelligent high-voltage cable grounding monitoring system Download PDFInfo
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- CN212845583U CN212845583U CN202021529997.7U CN202021529997U CN212845583U CN 212845583 U CN212845583 U CN 212845583U CN 202021529997 U CN202021529997 U CN 202021529997U CN 212845583 U CN212845583 U CN 212845583U
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Abstract
The utility model discloses an intelligent high tension cable ground connection monitoring system, including distal end collection system and surveillance center, wherein: the remote acquisition device comprises a cable sheath cross-connection protection grounding box, the grounding box comprises a closed box body, a controller and a cable sheath protector are arranged in the box body, a signal acquisition board and a communication module are arranged on the controller, and the signal acquisition board is connected with a current transformer, a voltage sensor, a temperature sensor and an anti-theft detection device; the current transformer, the voltage sensor, the temperature sensor and the anti-theft detection device collect the running state of the equipment and send the running state to the signal collection board; the signal acquisition board converts the running state into a digital signal and sends the digital signal to the communication module; the communication module sends the digital signal to a monitoring center, and the monitoring center analyzes and stores the digital signal. The utility model discloses can remote monitoring cable and earthing device's operating parameter, reduce managers's work load, reduce the economic loss because of the fault produces simultaneously.
Description
Technical Field
The utility model belongs to the technical field of power cable safety monitoring of power supply office's transmission electric system, concretely relates to intelligent high tension cable ground monitoring system.
Background
In the urban transmission electric system, in order to make the city safer, neater and more beautiful, change original aerial [ insulated ] cable into underground cable and carry electric power, just can not see electric (tower) pole and power transmission electric wire above the road like this, but because the underground adopts the copper core power cable who takes the sheath, can produce following several potential safety hazards:
(1) the cable sheath can generate tens of volts or even hundreds of volts of induced voltage and tens of amperes to tens of amperes of induced current, so that the cable sheath can generate heat and even generate breakdown, and the safety of power transmission is seriously influenced;
(2) and the power cable can be damaged mechanically and chemically and even stolen from an overhead line to an underground line.
For the above situation, the traditional solution is:
(1) the operation mode of cross interconnection double-end grounding or single-end direct grounding is adopted;
(2) and periodically inspecting the line, and measuring the voltage, the current and the temperature of the protective layer by using a tool.
The conventional solutions have the following disadvantages:
(1) and the workload is large: because the transmission distance of one line is generally several kilometers to dozens of kilometers, and dozens or even hundreds of transmission lines of one city are provided;
(2) and problems cannot be found in time: the line generation is uncertain, managers cannot know the real-time condition of the line in time, and even if the staff conduct normal inspection, line faults can occur, so that great loss is caused;
(3) when the equipment with the grounding is stolen, the equipment cannot be found in time, and great potential safety hazards are brought to the operation of a circuit after the equipment is stolen.
SUMMERY OF THE UTILITY MODEL
The technical purpose is as follows: to the problem that exists among the prior art, the utility model discloses an intelligent high tension cable ground connection monitoring system can remote monitoring cable and earthing device's operational parameter, has reduced managers's work load, reduces the economic loss because of the fault produces simultaneously.
The technical scheme is as follows: the utility model adopts the following technical scheme: an intelligent high-voltage cable grounding monitoring system is characterized by comprising a far-end acquisition device and a monitoring center, wherein the far-end acquisition device is connected with the monitoring center through wireless communication; wherein:
the remote end acquisition device comprises a cable sheath cross-connection protection grounding box, the grounding box comprises a closed box body, a controller and a cable sheath protector are arranged in the box body, the cable sheath protector is arranged between the cable sheath and the ground, a signal acquisition board and a communication module are arranged on the controller, a voltage sensor is arranged on the signal acquisition board, and the voltage sensor acquires the voltage value of each phase of cable sheath in the grounding box;
the input of signal acquisition board still is connected with current transformer, temperature sensor and theftproof detection device, wherein: the current transformer is arranged at the grounding point of each phase of cable sheath in the grounding box and is used for collecting the grounding circulation of each phase of cable sheath; the temperature sensor is arranged on each phase of cable sheath or the surface of each phase of cable joint in the grounding box and is used for collecting the temperature of each phase of cable sheath or each phase of cable joint; the anti-theft detection device comprises an anti-theft box door of the grounding box and a door opening detection switch arranged on the box door, and is used for acquiring anti-theft information of the grounding box;
the output of the signal acquisition board is wirelessly connected with the monitoring center through the communication module.
Preferably, the far-end acquisition device further comprises a solar power generation panel and a storage battery, wherein the solar power generation panel supplies power to the far-end acquisition device and the storage battery, and the storage battery supplies power to the far-end acquisition device.
Preferably, the far-end acquisition device further comprises a CT power taking ring and a storage battery, wherein the CT power taking ring is used for sensing and taking power to supply power to the far-end acquisition device and the storage battery, and the storage battery is used for supplying power to the far-end acquisition device.
Preferably, the communication module adopts a GPRS module, a 4G or 5G SIM card.
Preferably, the monitoring center displays the position of the remote acquisition device on an electronic map through the base station information of the GPRS module.
Preferably, the monitoring center comprises a server, a computer terminal and a mobile phone, wherein the server is respectively in wireless connection with the computer terminal and the mobile phone.
Has the advantages that: the utility model discloses following beneficial effect has:
(1) the utility model discloses a GPRS and network communication technology for remote computer or cell-phone APP can real-time supervision cable and the operating parameter of ground connection case, do not need the field patrol and examine of managers, the work load of managers has been reduced to a great extent, has improved work efficiency;
(2) the utility model can alarm at the background when the power cable sheath is abnormal, and can send information to the manager at the same time, so that the manager can timely deal with abnormal conditions, such as over-temperature, over-voltage, over-current and the like of the cable, and pre-process the abnormal conditions in advance, thereby preventing further faults, improving the safety of power transmission and reducing the economic loss caused by faults;
(3) the utility model discloses a theftproof detection device can in time send information to administrative center or managers cell-phone when the ground connection case takes place to steal, accomplishes in time to prevent, has ensured the safety precaution of ground connection case.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a schematic diagram of the present invention;
the anti-theft device comprises a box body 1, a grounding bus bar 2, a grounding copper bar 3, a current transformer 4, a phase copper bar 5, a cable sheath protector 6, a controller 7, an anti-theft detection device 8 and a solar power generation panel 9.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The utility model discloses an intelligent high-voltage cable grounding monitoring system, which adopts a two-stage architecture and is divided into a far-end acquisition device and a monitoring center, wherein the far-end acquisition device is responsible for the acquisition and the pretreatment of information and converts current, voltage and temperature signals into digital signals for transmission; the monitoring center is responsible for processing the uploading signal of the far-end acquisition device in the region under jurisdiction, transmitting the alarm information to the manager and simultaneously responsible for processing and counting the related information in the region.
The monitoring center comprises a server, a computer terminal, a mobile phone and corresponding monitoring software thereof, is set as required, is mainly responsible for summarizing and processing front-end information, and provides necessary information and decision basis for the unified management of the power cables. The server is respectively in wireless connection with the computer terminal and the mobile phone, analyzes and stores the digital signals sent by the remote acquisition device, and sends the analysis results to the computer terminal and the mobile phone; meanwhile, the server also generates alarm information according to the analysis result and sends the alarm information to the computer terminal and the mobile phone. In the later-stage capacity expansion of the monitoring system, the configuration of the monitoring center does not need to be changed, only the monitoring points of the corresponding far-end acquisition devices need to be increased, and the centralized monitoring management of the grounding current and voltage data of the single-core cable in the region under jurisdiction can be completed by intensively converging the monitoring points to the monitoring center according to the network networking condition. If abnormal conditions occur, the alarm can be given through various modes such as telephone, short message, local multimedia acousto-optic and the like, and the management personnel can be informed in time, so that effective measures can be taken conveniently for prevention.
The far-end collection system includes cable sheath cross interconnection protection grounding box, and the grounding box includes 3 alternately arranged looks copper bars 5 in sealed box 1 and the box 1, and 3 looks copper bars 5's one end is connected with A looks cable, B looks cable and C looks cable respectively, and 3 looks copper bars 5's the other end is connected to ground connection busbar 2 through 1 ground copper bar 3 respectively.
The far-end acquisition device further comprises a controller 7 and a cable sheath protector 6 which are arranged in the cable sheath cross-connection protection grounding box body 1, a signal acquisition board and a communication module are arranged on the controller 7, a voltage sensor is integrated on the signal acquisition board, and the signal acquisition board is further connected with a current transformer 4, a temperature sensor and an anti-theft detection device 8. The communication module adopts a GPRS module and a 4G or 5G SIM card. The current transformer, the voltage sensor, the temperature sensor and the anti-theft detection device collect the running states of a cable and a grounding box in the grounding box and send the running states to the signal collection plate; the signal acquisition board converts the running states of the cable and the grounding box into digital signals and sends the digital signals to the communication module; the communication module sends the digital signal to a monitoring center, and the monitoring center analyzes and stores the digital signal.
Wherein, the controller 7 can adopt YNDLCB; the cable sheath protector 6 can adopt BHQ-7/600; the signal acquisition board can adopt YNSB 10; the current transformer 4 can adopt CTT-100A/20 mA; the temperature sensor can adopt PT 100; the GPRS module may employ YNTX 01.
A0-100A single-mode accurate current transformer 4 is installed in a cable sheath cross interconnection protection grounding box body, the current transformer 4 is a cable sheath current acquisition sensor, current parameters of grounding points of each phase of cable sheaths of 110kV and above high-voltage cables are monitored in real time, accurate measurement and timing inspection measurement of 0-100A grounding circulation can be achieved, the traditional manual mode of periodic grounding circulation inspection measurement is replaced, the labor intensity of field measurement is greatly reduced, and the system maintenance efficiency is improved. The grounding circulation monitoring is used for monitoring the slowly-varying numerical value of the grounding circulation of the cable sheath, and reflecting the conditions of the good grounding degree of the sheath, the aging degree of the cable, the change of the load of a wire core and the like; meanwhile, under the condition that the high-voltage cable line normally runs, when the grounding circulating current value is suddenly reduced or zero, the condition that the grounding box is stolen or the grounding wire is stolen can be effectively judged by combining the electric regulation condition and the cable running state analysis and diagnosis model. The current transformer collects the grounding circulation of the cable sheath, converts the grounding circulation into a digital signal through the signal collecting board, and transmits the digital signal to the server through the communication module, and the server analyzes and stores the digital signal and distributes the digital signal to a mobile phone and a computer terminal of a manager; if the server judges that the grounding circulation exceeds the preset value and the produced sudden change is reduced or zero, the server simultaneously generates alarm information and sends the alarm information to the mobile phone and the computer terminal of the manager, and monitoring software on the mobile phone and the computer terminal can immediately display the alarm information.
The voltage sensor is integrated on the signal acquisition board, can monitor the voltage value on the cable sheath of each phase in real time, and can send alarm information when exceeding the preset value. The voltage sensor collects the voltage value of the cable sheath, the voltage value is converted into a digital signal through the signal collecting board, the digital signal is transmitted to the server through the communication module, and the server analyzes and stores the digital signal and distributes the digital signal to a mobile phone and a computer terminal of a manager; if the server judges that the voltage value of the cable protection layer exceeds the preset value, the server simultaneously generates alarm information and sends the alarm information to the mobile phone and the computer terminal of the manager, and monitoring software on the mobile phone and the computer terminal can immediately display the alarm information.
A cable sheath protector 6 is arranged between each phase of cable sheath and the ground, and when the voltage value of the cable sheath reaches a protection rated value, the cable sheath is conducted and discharged to the ground, so that the purpose of protecting the cable sheath is achieved.
The temperature sensor can adopt a temperature measuring triode which is fixed on the grounding cable protective layer and sealed in order to be matched with the circulating current detection, the temperature information of the relevant grounding cable is transmitted to the signal acquisition board through the temperature measuring probe, the monitoring probe can also be placed on the surface of the cable joint to detect the temperature of the cable joint, the uninterrupted continuous online monitoring of the operating temperature of the surface of the high-voltage cable joint for 24 hours can be realized, and the temperature acquisition range is-55 ℃ to +125 ℃. Through the statistical analysis to high tension cable body sheath temperature, can make managers master its working condition comprehensively, in time know the ageing condition of cable sheath to when connecting the temperature sharply to rise and reach the ultimate temperature, send alarm signal and remind managers emergency treatment. The temperature measuring triode collects a temperature value, converts the temperature value into a digital signal through the signal collecting board, and transmits the digital signal to the server through the communication module, and the server analyzes and stores the digital signal and distributes the digital signal to a mobile phone and a computer terminal of a manager; if the server judges that the temperature value is increased rapidly and reaches the limit temperature, the server simultaneously generates alarm information and sends the alarm information to the mobile phone and the computer terminal of the manager, and monitoring software on the mobile phone and the computer terminal can display the alarm information immediately.
The box body 1 is internally provided with an anti-theft detection device 8 which comprises an anti-theft box door and a door opening detection switch and has a door opening alarm function. The door opening detection switch detects the anti-theft information, the anti-theft information is converted into a digital signal through the signal acquisition board and then transmitted to the server through the communication module, and the server analyzes and stores the digital signal and distributes the digital signal to a mobile phone and a computer terminal of a manager. If the anti-theft box door is opened or pried, the alarm in the grounding box can send out harsh alarm sound (about 120 decibels), meanwhile, the server generates alarm information (after the grounding box sends out the alarm) and distributes the alarm to the mobile phone and the computer terminal of a manager, the alarm information can be displayed immediately by monitoring software on the mobile phone and the computer terminal, the alarm information is displayed in red characters, meanwhile, the alarm receiving telephone which is set in advance can be automatically dialed (2 short messages and 3 voice alarm receiving numbers can be set), and the surrounding sound are monitored through the camera in the box body, the on-site call is implemented by arranging the loudspeaker in the box body, and whether the case needs to be reported can be determined according to the situation.
The utility model discloses a monitoring center shows distal end collection system's specific position on electronic map through the longitude and latitude data that sets up in the distal end collection system or the basic station information of GPRS module.
Since most of the remote acquisition devices are distributed in the field in the countryside and generally cannot acquire 220V alternating-current power supplies, the power supply of the remote acquisition devices is generally acquired by adopting the following two methods:
cable induction power-taking device: the remote acquisition device is provided with a CT electricity taking ring and a storage battery, the CT electricity taking ring is arranged on a main cable, and electricity is taken through the CT electricity taking ring in an induction manner when current passes through the main cable, so that on one hand, power is supplied to a main board power supply of the remote acquisition device, and meanwhile, the storage battery is also charged; when no current flows through the main cable, the CT electricity taking ring cannot obtain electricity in an induction mode, and the storage battery directly supplies power to a main board power supply of the far-end collecting device. The CT power-taking ring can adopt CTG-5W.
Photovoltaic solar panel gets the electric mode: the far-end acquisition device is internally provided with a solar power generation panel 9 and a storage battery, the solar power generation panel is arranged at the top of the cable sheath cross interconnection protection grounding box, and when the illumination intensity is enough, the solar power generation panel supplies power to a main board power supply of the far-end acquisition device and also charges the storage battery; when illumination intensity is not enough, the solar panel can not supply power, and the storage battery directly supplies power for the main board power supply of the far-end acquisition device.
The working principle of the utility model is as follows: the remote acquisition device converts the current and voltage signals of the cable sheath, the cable temperature value, the anti-theft equipment information and the like into digital signals through the signal acquisition board, then the digital signals are transmitted to the server through the GPRS module, the server analyzes and stores the digital signals, alarm information is generated according to the analysis result, and the analysis result is distributed to the mobile phone and the computer terminal, so that the mobile phone or the computer terminal can check and acquire the data and other information of each equipment in real time and receive the alarm information.
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (6)
1. An intelligent high-voltage cable grounding monitoring system is characterized by comprising a far-end acquisition device and a monitoring center, wherein the far-end acquisition device is connected with the monitoring center through wireless communication; wherein:
the remote end acquisition device comprises a cable sheath cross-connection protection grounding box, the grounding box comprises a closed box body, a controller and a cable sheath protector are arranged in the box body, the cable sheath protector is arranged between the cable sheath and the ground, a signal acquisition board and a communication module are arranged on the controller, a voltage sensor is arranged on the signal acquisition board, and the voltage sensor acquires the voltage value of each phase of cable sheath in the grounding box;
the input of signal acquisition board still is connected with current transformer, temperature sensor and theftproof detection device, wherein: the current transformer is arranged at the grounding point of each phase of cable sheath in the grounding box and is used for collecting the grounding circulation of each phase of cable sheath; the temperature sensor is arranged on each phase of cable sheath or the surface of each phase of cable joint in the grounding box and is used for collecting the temperature of each phase of cable sheath or each phase of cable joint; the anti-theft detection device comprises an anti-theft box door of the grounding box and a door opening detection switch arranged on the box door, and is used for acquiring anti-theft information of the grounding box;
the output of the signal acquisition board is wirelessly connected with the monitoring center through the communication module.
2. The intelligent high-voltage cable grounding monitoring system as claimed in claim 1, wherein the remote acquisition device further comprises a solar panel and a storage battery, the solar panel supplies power to the remote acquisition device and the storage battery, and the storage battery supplies power to the remote acquisition device.
3. The intelligent high-voltage cable grounding monitoring system according to claim 1, wherein the remote acquisition device further comprises a CT power-taking ring and a storage battery, wherein the CT power-taking ring inductively takes power to supply power to the remote acquisition device and the storage battery, and the storage battery supplies power to the remote acquisition device.
4. The intelligent high-voltage cable grounding monitoring system as claimed in claim 1, wherein the communication module is a GPRS module, a 4G or 5G SIM card.
5. The intelligent high-voltage cable grounding monitoring system as claimed in claim 4, wherein the monitoring center displays the position of the remote acquisition device on an electronic map through the base station information of the GPRS module.
6. The intelligent high-voltage cable grounding monitoring system as claimed in claim 1, wherein the monitoring center comprises a server, a computer terminal and a mobile phone, wherein the server is wirelessly connected with the computer terminal and the mobile phone respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021529997.7U CN212845583U (en) | 2020-07-29 | 2020-07-29 | Intelligent high-voltage cable grounding monitoring system |
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| CN202021529997.7U CN212845583U (en) | 2020-07-29 | 2020-07-29 | Intelligent high-voltage cable grounding monitoring system |
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| CN212845583U true CN212845583U (en) | 2021-03-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114530818A (en) * | 2022-03-01 | 2022-05-24 | 南阳金牛电气有限公司 | Cable sheath intelligence grounding box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114530818A (en) * | 2022-03-01 | 2022-05-24 | 南阳金牛电气有限公司 | Cable sheath intelligence grounding box |
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